Different data types are stored in different file formats. The file format encodes and organizes data in specific ways, and the file extension identifies the format. Common file formats include:.doc for Microsoft Word documents,.mp3 for audio files,.jpg for images, etc. Multimedia standard file formats include MIDI (used for instrument connection and communication, not a music recording but a series of instructions), JPEG (a standard for lossy image compression), MP3 (for lossy audio compression), and MP4 (for lossy video compression and can also be used for other data).